Inquiries into the circumstances of both these deaths were ongoing, police said.
A report was received about 10.15pm that a man had been swept away by floodwaters in Onewhero.
A search and rescue team would deploy today to search for the missing man.
And about 7.35pm, Police and other emergency services responded to a call where a landslide had brought down a house on Shore Rd, Remuera.
One person remains unaccounted for.
The property will be assessed this morning, police said.
Police continued to urge people to stay home and not drive unless “absolutely necessary” today.
“Many roads are closed in the region due to flooding and slips, making it extremely dangerous to be on the roads,” a police spokesperson said.
“We will continue to support lead agencies today as they work to establish the extent of the damage and to assist those in need.”